Which GM Crate Motor

[joe231]

the intake I used the holes were just wallowed out with a drill bit into an oblong shape. I didn't do it, it was done by the guy I bought it from, he was running it on an older small block. a bur bit in an air grinder would probably work well.
if you look at the TBI intake you will see the middle 2 bolts are more vertical than the others are due to the angle of the holes in the TBI heads
I was thinking about getting my other manifold milled so it was cleaner. It is going on the wife's '66 when we get it back together.
I personally love the GM TBI for reliability and fuel mileage.